By Noel Randewich SAN FRANCISCO (Reuters) – Memory chipmaker Micron Technology Inc posted fiscal third-quarter results above expectations and said pent up demand for personal computers is bolstering demand for its DRAM chips. For the first time, the U.S.-chipmaker offered a quarterly revenue forecast, which also exceeded analysts’ estimates. Micron said better-than-expected demand for personal computers was helping DRAM sales and that pricing for NAND chips was relatively stable. “Pent-up demand for corporate refresh on desktops and notebooks seem to be leading to better-than-expected sector performance,” Micron President Mark Adams said on a conference call with analysts.